Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current Assets:
Cash and cash equivalents	$ 109,029	$ 115,708
Short-term investments	10,117	8,730
Accounts receivable, net of allowance of $6,863 and $4,164, respectively	92,045	86,828
Deferred income taxes	9,352	9,900
Prepaid expenses and other current assets	11,092	8,695
Total current assets	231,635	229,861
Property and equipment, net	21,351	17,265
Goodwill, net	62,237	62,250
Deferred income taxes	260	270
Other assets	7,264	8,524
Total assets	322,747	318,170
Current liabilities:
Accounts payable	10,095	12,483
Accrued compensation and benefits	24,914	30,889
Accrued and other liabilities	12,258	12,501
Deferred revenue	65,180	58,968
Income taxes payable	7,204	7,974
Total current liabilities	119,651	122,815
Other non-current liabilities	$ 12,733	$ 13,332
Shareholders' equity:
Preferred stock, no par value; 20,000,000 shares authorized, no shares issued or outstanding in 2015 and 2014
Common stock, $0.01 par value; 200,000,000 shares authorized; 73,064,213 and 74,104,064 shares issued and outstanding at September 30, 2015 and December 31, 2014, respectively	$ 731	$ 741
Retained earnings	201,673	191,305
Accumulated other comprehensive loss	(12,041)	(10,023)
Total shareholders' equity	190,363	182,023
Total liabilities and shareholders' equity	$ 322,747	$ 318,170